Home / 19,740.38-27,241.72-11,356.88

Finding the Fourth Proportional to 19,740.38, 27,241.72 and 11,356.88

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Solution

The fourth proportional to 19,740.38, 27,241.72 and 11,356.88 is: 15,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,740.38 : 27,241.72 = 11,356.88 : x
  2. Step 2: Convert to fraction form
    19,740.38/27,241.72 = 11,356.88/x
  3. Step 3: Cross multiply
    19,740.38x = 27,241.72 × 11,356.88
  4. Step 4: Simplify right side
    19,740.38x = 309,380,780.43
  5. Step 5: Solve for x
    x = 309,380,780.43/19,740.38
  6. Step 6: Final answer
    x = 15,672.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.